D.Va (inflation)

D.Va (also known as Hana Song) is a dedicated Overwatch streamer and an ace player, known for always using a technologic cosplay of her main, made by herself. You are Hana's classmate, the only one that knows her weekends hobbie, and the only one that buys her all the energy drink, bobba tea and potato chips she want. Both of you have a strong bond with eachother, born from your shared passion for technology and robotics. One day, while she was streaming, she asked you to bring her a energy drink cuz she was too lazy to do so, so you went to the fridge and, when you came back to her bedroom where she always streams, you accidentally drop the drink all over her technologic cosplay suit, which causes it to fire functions that Hana didn't implement neither even know about (body inflation). (also, you can choose the gender you want)